Make GUI box appear and disappear

Archived Forums Questions & Answers
1

Very newbie question. I'm trying to make a GUI box appear when I mouse over an object and disappear when the mouse is no longer on the object. I've been trying to do this by changing the alpha of the GUI box (though I feel like there may be a simpler way, like enabling and disabling the GUI...)

This is what I have so far: 

var alpha = float;

function Start(){
alpha = 0;  
}

function OnGUI() {
GUI.skin.box.wordWrap = true;      
GUI.color.a = alpha;
GUI.Box(Rect(10,Screen.height/2+115,Screen.width-15,Screen.height/2-120),"text text text");
}

function OnMouseEnter () {
alpha = 1;
Debug.Log("mouse_enter");
}

function OnMouseExit(){
alpha = 0;
Debug.Log("mouse_exit");
}

However my script is not responding to my "alpha" variable. I tried looking for a way to enable and disable the GUI, but there doesn't seem to be an easy way too. Or I'm missing something?

3

You could set a boolean variable to true or false depending OnMouseEnter/Exit and modify your OnGUI function like this: 

function OnGUI() {
  if (guiEnabled) {
    ... //draw GUI stuff
  }
}
2 
   GUI.backgroundColor = Color(1, 1,1,0);
   GUI.color.a =Mathf.PingPong(Time.time,1);
    GUI.Button(new Rect(Screen.width *(0.2/6.55), Screen.height * (3.9/6.55),Screen.width * (.5/6.55), Screen.height * (.5/6.55)),GUIContent(playtexture,"playgame"));